Elecraft does not do the extended temperature comp because it would add too much to the price of the radio for a feature that only a few people need.
I’m surprised when people buy a KX3, then are upset that it performs to its specs instead of performing much better than specified. Both the FT-817 and the KX3 are 1 ppm frequency stability, though the FT-817 is only specified for that at 25º C after a 1 hour warmup. The KX3 specs are for 0-50º C. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 30, 2016, at 4:50 AM, D Howard <[email protected]> wrote: > > David > I thought at the price I paid for the KX3 I shouldn't have to do the > compensation nor run the KX3 at such reduced power once compensated. My > trusty old FT817 worked fine. > I also assumed Elecraft would address the issue with an updated KX3 -ie an > 'KX3s' at some point. > So I sold it awaiting the 'upgrade' which turned out to be the KX2 ! > Which is far more stable out of the box. > I'm happy to now order a KX2! > 73/72 > Dan VA3MA > >> On May 30, 2016, at 4:01 AM, David Anderson <[email protected]> wrote: >> >> Dan , >> >> I am surprised that you couldn't get WSJT to go with your KX3 and had to >> sell it. >> >> I am using my KX3 (note not a KX2) on WSJT on 144 MHz EME JT65b. I did >> however do the extended temperature VFO compensation first and that perhaps >> is a key requirement. The KX3 was actually more stable than my original 144 >> MHz transverter's TCXO, which I had to replace with a better TCXO to get the >> transmit drift to satisfactory levels. >> >> >> 73 from David GM4JJJ >> >>> On 30 May 2016, at 04:45, D Howard <[email protected]> wrote: >>> >>> Luke >>> I too sold my KX3 for the same reason- no WSJT. >>> Happy to see KX2 capable with care >>> Dan >>> >>>> On May 29, 2016, at 11:20 PM, Luke <[email protected]> wrote: >>>> >>>> I just tried JT9 actually and had no problems. If you head over to >>>> PSKReporter and type in my call sign you can see how it's been working for >>>> me this evening. It seems to heat up a little faster using JT9, but it's >>>> still managable. I don't mind taking a few minutes between QSO's to let >>>> things cool off. From my understanding Gemsproducts.com already has KX2 >>>> side handles in the works and I will definitely pick some up and see how >>>> they work. I can only imagine that any more metal on the side to pick up >>>> some extra heat will only be a good thing. >>>> >>>> Luke >>>> AD0KI >>>> >>>> >>>> >>>> >>>> From: Dan - VA3MA <[email protected]> >>>> To: Luke <[email protected]> >>>> Cc: Elecraft <[email protected]> >>>> Sent: Sunday, May 29, 2016 9:14 PM >>>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ?? >>>> >>>> Luke >>>> Thanks - just what I needed to know! >>>> Have you tried JT9 ? >>>> Perhaps some sort of heatsink/handles added to the case might help?? >>>> 73 >>>> Dan VA3MA >>>> >>>> >>>> On 2016-05-29, at 22:37, Luke <[email protected]> wrote: >>>> >>>> Hmm, not sure why it cut out my message. Here's what I wrote: >>>> >>>> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I >>>> used to have a KX3 and sold it because it wouldn't decode WSPR between >>>> transmit cycles due to excessive drift. I've kept the KX2 to <5 watts >>>> because the right sideplate gets very hot with the high duty cycle. >>>> >>>> I've actually just been sitting here running JT65 @ 10 watts when I got >>>> your email, and it is doing pretty well. I had 3 back to back QSO's and on >>>> the last transmission the PA Temp got up to 47C (~117F) which doesn't seem >>>> too bad. As it cools off there is no drifting or slanting of signals on >>>> the waterfall either. I think the 1 minute on/off duty cycle of JT65 is >>>> very doable with the KX2, and WSPR might be pushing it. The other night >>>> the sideplate got quite hot running WSPR at 5 watts. >>>> >>>> Luke >>>> AD0KI >>>> >>>> >>>> From: Dan - VA3MA <[email protected]> >>>> To: Luke <[email protected]> >>>> Sent: Sunday, May 29, 2016 8:12 PM >>>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ?? >>>> >>>> Luke >>>> No content???? >>>> >>>>> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[email protected]> >>>>> wrote: >>>>> >>>>> >>>>> ______________________________________________________________ >>>>> Elecraft mailing list >>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>>> Help: http://mailman.qth.net/mmfaq.htm >>>>> Post: mailto:[email protected] >>>>> >>>>> This list hosted by: http://www.qsl.net >>>>> Please help support this email list: http://www.qsl.net/donate.html >>>>> Message delivered to [email protected] >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[email protected] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [email protected] >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
